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stress-oriented hydrogen-induced cracking

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Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001832
EISBN: 978-1-62708-241-9
... integrated. Several possible causes of cracking were considered: (1) zinc-induced liquid metal embrittlement, (2) hydrogen embrittlement, (3) hydroxide stress-corrosion cracking, and (4) nitrate stress-corrosion cracking. Liquid Metal Embrittlement The vent pipe consists of a fabricated galvanized...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001291
EISBN: 978-1-62708-215-0
..., randomly oriented cracks. The steel surface below the plating had been shot peened. This peening is usually carried out before plating to eliminate any residual tensile stress in the surface of the part; steels hardened to this strength level are highly susceptible to hydrogen-induced cracking during...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006785
EISBN: 978-1-62708-295-2
... mechanisms identified as stress-corrosion cracking. HIC, hydrogen-induced cracking; SOHIC, stress-oriented hydrogen-induced cracking; SSC, sulfide stress cracking; AGO, atmospheric gas oil; LVGO, light-vacuum gas oil; HVGO, heavy-vacuum gas oil. Adapted from Ref 6 Examples of components...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003543
EISBN: 978-1-62708-180-1
... environmentally induced embrittlement fracture mechanics fracture modes intergranular fracture load-bearing capacity microstructure mixed-mode cracking overload failures stress analysis thermally induced embrittlement transgranular cleavage OVERLOAD FAILURES, from the perspective of materials...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001648
EISBN: 978-1-62708-234-1
... environment and creating conditions favorable to hydrogen stress cracking. This paper describes the analysis of the fracture of the coupling and provides an example of how biologically induced corrosion can result in unexpected fracture of a relatively basic machine part. Biological organisms 416 UNS...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006760
EISBN: 978-1-62708-295-2
... wear. Take care to avoid additional damage or alteration to the subject component during cleaning and sectioning. If lab-induced damage is noted, document it immediately, to minimize confusion later in the investigation. Fig. 3 (a) Residual-stress opening crack in silver-plated brass teapot...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003552
EISBN: 978-1-62708-180-1
.... Hirth J.P. , Theories of Hydrogen Induced Cracking , Hydrogen Embrittlement and Stress Corrosion Cracking , Gibala R. and Hehemann R.F. , Ed., American Society for Metals , 1984 , p 29 – 41 3. Raymond L. , Ed., Hydrogen Embrittlement Testing , STP 543, American...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006784
EISBN: 978-1-62708-295-2
... U.K. , Bose S.K. , and Roy S.K. , Environmental Degradation of Metals , Marcel Dekker , 2001 10.1201/9781482292244 2. Hirth J.P. , Theories of Hydrogen Induced Cracking , Hydrogen Embrittlement and Stress Corrosion Cracking , Gibala R. and Hehemann R.F. , Ed...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001707
EISBN: 978-1-62708-217-4
... and a crack-free planing link were also measured. The average hydrogen content of the crack-free links was significantly lower than that of the cracked links, 0.5 ppm by weight and 4.1 ppm by weight respectively. Stress and Fracture Mechanics Analyses To better characterize the probable cause...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006778
EISBN: 978-1-62708-295-2
...× (fracture surface) • Microvoids (dimples) elongated in direction of loading • Single crack with no branching • Surface slip band emergence • Cleavage or intergranular fracture • Origin area may contain an imperfection or stress concentrator • Progressive zone: worn appearance, flat, may show striations...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001534
EISBN: 978-1-62708-220-4
.... In the supersaturated state, the hydrogen diffuses to regions of high stress concentration, where it can initiate a crack ( Ref 9 ). The area of lack of penetration in the condenser tube weld was a probable stress-concentration site and thus a favorable region for the initiation of hydrogen-induced cracking...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001820
EISBN: 978-1-62708-241-9
... the cause of failure and provide preventive measures. The valve body was made of A216-WCC cast carbon steel. Its inner surface was covered with cracks stemming from surface pits. Investigators concluded that the failure was caused by a combination of hydrogen-induced corrosion cracking and sulfide stress...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001775
EISBN: 978-1-62708-241-9
..., energy dispersive x-ray analysis (EDXA) indicated significant segregation of sulfur and chlorine along the grain boundaries. Failure was attributed to hypochlorous-acid (HClO)-induced stress-corrosion cracking (SCC). The HClO was formed by the reaction of HCl with atmospheric O 2 that entered the tube...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001717
EISBN: 978-1-62708-217-4
... into the areas of high stress concentration, such as pits, defects, inclusions, voids or crack tips. The hydrogen required to cause embrittlement decreases as the strength of the material increases. Hydrogen can induce stress corrosion cracking (SCC), and hydrogen-assisted fractures in maraging 300 steel occurs...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001805
EISBN: 978-1-62708-241-9
... ]. With a susceptible material, sufficient stress, and sufficient environmental-induced hydrogen formation, fracture will occur. It should be noted that in high-strength steels, such as these subject scissors, the mechanisms of hydrogen embrittlement and stress corrosion cracking (SCC) are believed to be the same [ 2...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001818
EISBN: 978-1-62708-180-1
.... The article explains the failure of pressure vessels with emphasis on stress-corrosion cracking, hydrogen embrittlement, brittle and ductile fractures, creep and stress rupture, and fatigue with examples. brittle fracture composite creep rupture ductile fracture fabrication failure analysis...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003509
EISBN: 978-1-62708-180-1
...: Overload failure by brittle cracking mechanisms Overload failure by ductile cracking mechanisms Plastic collapse Buckling Fatigue Corrosion fatigue Corrosion Stress-corrosion cracking Hydrogen-induced cracking If elevated temperatures were involved, then creep deformation...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001812
EISBN: 978-1-62708-241-9
... couplings, with comments on general procedures for failure analysis . Pract. Failure Anal. 2 , 50 – 61 ( 2002 ) 10.1007/BF02715500 39. Lynch S.P. : Progress towards understanding mechanisms of hydrogen embrittlement and stress-corrosion cracking . In: Paper 07493, NACE Corrosion...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003541
EISBN: 978-1-62708-180-1
... 849 203 van der Waals Ar 7.8 1.8 Cl 2 31 7.4 Hydrogen NH 3 35 8.4 H 2 O 51 12.2 Source: Ref 1 , 2 Fig. 1 Typical stress-strain curve for a fiber, a plastic, and an elastomer Fig. 2 Typical creep and creep rupture behavior of ductile polymers...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001308
EISBN: 978-1-62708-215-0
... in the rail (regions Ia and Ib) prior to complete fracture of the flange. The type of intergranular cracking seen in regions Ia and Ib ( Fig. 4 ) can be produced either subcritically, as with fatigue cracking, stress-corrosion cracking, or hydrogen-induced cracking, or in an unstable manner, as with grain...